What is the average discrepancy in size between the average black male penis and the average white m

I don't know inches and stuff. All I know is what I've learned in nursing school and from my mother who's a nurse. Black guys usually have a longer, more slender penis. White men usually have a shorter, wider penis. The same goes for women. The black women have a longer, more slender vaginal canal than white women. I'm not sure about the other races (mexican, latin, asian, etc.) I haven't heard anything about those. Hopefully this helped and answered your question the way you wanted.